Abstract: Background: Carotenoids are bioactive tetraterpenoid C40 pigments that are
actively synthesized by plants, bacteria, and fungi. Compounds such as α-carotene, β-
carotene, lycopene, lutein, astaxanthin, β-cryptoxanthin, fucoxanthin, and zeaxanthin have
attracted increasing attention for their antiaging properties. They exhibit antioxidant, neuro-
protective, and anti-inflammatory properties, contributing to the prevention and treatment
of age-related diseases. Objectives: The aim of this study was to comprehensively analyze
the pharmacological potential and biological mechanisms of carotenoids associated with
age-related disorders and to evaluate their application in nutraceuticals, pharmaceuticals,
and cosmeceuticals. Methods: A systematic review of studies published over the past
two decades was conducted using the databases PubMed, Scopus, and Web of Science. The
selection criteria included clinical, in silico, in vivo, and in vitro studies investigating the
pharmacological and therapeutic effects of carotenoids. Results: Carotenoids demonstrate
a variety of health benefits, including the prevention of age-related macular degeneration,
cancer, cognitive decline, metabolic disorders, and skin aging. Their role in nutraceuticals
is well supported by their ability to modulate oxidative stress and inflammatory pathways.
In pharmaceuticals, carotenoids show promising results in formulations targeting neurode-
generative diseases and metabolic disorders. In cosmeceuticals, they improve skin health
by protecting it against UV radiation and oxidative damage. However, bioavailability,
optimal dosages, toxicity, and interactions with other bioactive compounds remain critical
factors to maximize therapeutic efficacy and still require careful evaluation by scientists.
Conclusions: Carotenoids are promising bioactive compounds for antiaging interventions
with potential applications in a variety of fields. Further research is needed to optimize their
formulas, improve bioavailability, and confirm their long-term safety and effectiveness,
especially in the aging population.

Keywords: age-related disorders; α-carotene; β-carotene; lycopene; lutein; astaxanthin;
β-cryptoxanthin; fucoxanthin; zeaxanthin; pharmacological effects; antiaging properties;
possible toxic effects

Shanaida M., Mykhailenko O., Lysiuk R., Hudz N., Balwierz R., Shulhai A., Shapovalova N., Shanaida V., Bjorklund G. Carotenoids for Antiaging: Nutraceutical, Pharmaceutical, and Cosmeceutical Applications. Pharmaceuticals (Basel). 2025; 18(3): 403. (Scopus Q1 SJR 1,019; IF=4,8) https://doi.org/10.3390/ph18030403

The SARS-CoV-2 virus first emerged in China in December 2019 and quickly spread worldwide. Despite the absence of a vaccination or authorized drug specifically developed to combat this infection, certain medications recommended for other diseases have shown potential effectiveness in treating COVID-19, although without definitive confirmation. This review aims to evaluate the existing literature on the efficacy of these medications against COVID-19. The review encompasses various potential treatments, including antiviral medications, anti-malaria and anti-rheumatic drugs, vaccines, corticosteroids, non-steroidal anti-inflammatory drugs (NSAIDs), antipyretic and analgesic medicines, antiparasitic drugs, and statins. The analysis also addresses the potential benefits and drawbacks of these medications, as well as their effects on hypertension and diabetes. Although these therapies hold promise against COVID-19, further research, including suitable product production or clinical testing, is needed to establish their therapeutic efficacy.

Methylmercury (MeHg) is a global environmental pollutant with neurotoxic effects. Exposure to MeHg via consumption of seafood and fish can severely impact fetal neurobehavioral development even when MeHg levels in maternal blood are as low as about 5 μg/L, which the mother tolerates well. Persistent motor dysfunctions and cognitive deficits may result from trans-placental exposure. The present review summarizes current knowledge on the mechanisms of MeHg toxicity during the period of nervous system development. Although cerebellar Purkinje cells are MeHg targets, the actions of MeHg on thiol components in the neuronal cytoskeleton as well as on mitochondrial enzymes and induction of disturbances of glutamate signaling can impair extra-cerebellar functions, also at levels well tolerated by adult individuals. Numerous herbal substances possess neuroprotective effects, predominantly represented by natural polyphenolic molecules that might be utilized to develop natural drugs to alleviate neurotoxicity symptoms caused by MeHg or other Hg compounds.

Keywords: COVID-19; ascorbic acid; copper; fat-soluble vitamins; iron; magnesium; micronutrients; selenium; vitamin B complex; zinc..

Keywords: bioprotective property; metabolic syndrome; natural sources; phenolic compounds; therapeutic effect.